US4893230A - Physical quantity controller - Google Patents

Physical quantity controller Download PDF

Info

Publication number
US4893230A
US4893230A US07/172,438 US17243888A US4893230A US 4893230 A US4893230 A US 4893230A US 17243888 A US17243888 A US 17243888A US 4893230 A US4893230 A US 4893230A
Authority
US
United States
Prior art keywords
numeral
value
area
key
controller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/172,438
Other languages
English (en)
Inventor
Tooru Shimomura
Kazutomo Naganawa
Toshiya Tanamura
Toshiaki Nagao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Assigned to OMRON TATEISI ELECTRONICS CO. reassignment OMRON TATEISI ELECTRONICS CO. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NAGANAWA, KAZUTOMO, NAGAO, TOSHIAKI, SHIMOMURA, TOORU, TANAMURA, TOSHIYA
Application granted granted Critical
Publication of US4893230A publication Critical patent/US4893230A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00—Systems controlled by a computer
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
    • G05B23/0235—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00—Systems controlled by a computer
    • G05B15/02—Systems controlled by a computer electric
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value

Definitions

  • This invention relates to a physical quantity controller, and more particularly, to a physical quantity controller which employs a microprocessor for control.
  • a value is displayed on a display unit using an input key. Thereafter, the value is inputted into the controller using a return key.
  • the return key is required to input the value into the controller.
  • the value cannot be automatically inputted into the controller.
  • such conventional controllers have a large number of key, resulting in a complicated structure.
  • a physical quantity controller which includes (1) a display unit including a numeral display area for displaying a numeral thereon, (2) a numeral updating unit for updating a numeral displayed on the numeral display area, (3) a mode changing unit for changing display modes of the display unit, (4) a storage unit which includes an input buffer for temporarily storing a numeral updated by the updating unit, a counter for counting time elapsing after actuation of the numeral updating unit, and a storage area for storing a value relating to the physical quantity, and (5) a writing unit for writing the updated numeral stored in the input buffer into the storage area as a new value when the counter reaches a predetermined number after the numeral updating unit has been actuated.
  • FIG. 1 is a schematic view of a preferred embodiment of this invention
  • FIG. 2 is a detailed circuit diagram of the preferred embodiment of this invention.
  • FIG. 3 is a memory map of a RAM (Random Access Memory) used in the preferred embodiment of this invention.
  • FIG. 4 is a front view of a front panel used in the preferred embodiment of this invention.
  • FIG. 5 is a flow chart presenting a schematic operation of the preferred embodiment of this invention.
  • FIG. 6 is a flow chart representing the detailed operations of FIG. 5.
  • FIG. 7 is a flow chart representing the operation mode changing sequence according to the invention.
  • FIG. 1 is a schematic view of a temperature controller according to a preferred embodiment of this invention.
  • Numeral updating means 1 is connected to key pushing identification means 5 and to storage means 3.
  • Mode changing means 2 is connected to value changing means 6 which is dedicated to storage means 3.
  • Storage means 3 includes an input buffer area, a counter area and a value storing area.
  • Key pushing identification means 5 is connected to value changing means 6. Data to be displayed is sent from storage means 3 to display means 4.
  • FIG. 2 is a circuit diagram of the temperature controller according to the preferred embodiment of this invention.
  • a sensor input unit 11 receives analog signals from a temperature sensor (not shown), converts them into digital signals, and sends the digital signals to a CPU (Central Processing Unit) 12.
  • a ROM (Read Only Memory) 13 and a RAM (Random Access Memory ) 14 are provided as storage means 3 and are dedicated to CPU 12.
  • a display unit connected to CPU 12 is provided as a display means, which displays a process value (current temperature), a set point (target temperature) and an alarm point (alarm temperature).
  • numeral updating unit 17 connected to CPU 12 is provided as a numeral updating means 1, which updates a displayed value.
  • a mode changing key 18 connected to CPU 12 constitutes a mode changing means 2, which is used to change the display modes of display unit 15.
  • FIG. 3 represents a memory map showing the contents of RAM 14 of the temperature controller embodiment.
  • RAM 14 has six storage areas. The first is a process value area which stores a process value (current temperature) which is entered into CPU 12 through sensor input unit 11. The second is a set point area which stores a set point (target temperature), and the third is an alarm point area which stores an alarm temperature. The fourth area contains a flag A which indicates whether or not numeral updating unit 17 is being operated. The fifth area is allocated to a counter which counts the time which has elapsed after numeral updating unit 17 has been put into operation. The sixth area is an input buffer which temporarily stores the updated temperature value. In a set point display mode, the value in the input buffer is displayed as a set point on a temperature display area of display unit 15, and in an alarm point display mode, the value in the input buffer is displayed as an alarm temperature.
  • FIG. 4 is a front view of the temperature controller embodiment.
  • Display unit 15 is disposed on the upper part of the front face of the controller as shown.
  • Display unit 15 includes a numeral display area 15a for displaying a temperature value, and also includes two display lamps 15b (SP) and 14c (AL).
  • Lamp 15b indicates that a set point is displayed on numeral display area 15a
  • lamp 15c indicates that an alarm point is displayed on numeral display area 15a.
  • Numeral updating unit 17 and mode changing key 18 are disposed on the lower part of the front face.
  • Numeral updating unit 17 includes a key 17a which is used to decrease a value displayed on numeral display area 15a, and a key 17b which is used to increase a value displayed on display area 15a.
  • the lower marks " “, " ", and “ " correspond to mode changing key 18 and keys 17a and 17b, respectively.
  • FIG. 5 is the main routine representing the schematic operation of the temperature controller embodiment.
  • a power supply (not shown) is turned on, an initial operation is carried out in step 31.
  • a temperature operation is carried out, in which a process value detected by a temperature sensor is entered into CPU 12 through sensor input unit 11.
  • a control variable is calculated using a process value (i.e., the current temperature in the temperature controller embodiment) and a set or target point.
  • the calculated control variable is outputted through output unit 18 and used in a controlled process.
  • An interrupt operation shown in FIG. 6 is carried out repetitively at a time interval of 10 ms during the abovedescribed main routine.
  • a current display mode is checked to determine whether or not it is a process value (current temperature) display mode. If the current mode is found to be the process value display mode, mode changing key 18 is checked in step 42 to determine whether or not it has been depressed. If key 18 is found to be depressed, a mode advancing operation shown in FIG. 7 is carried out so that the set point and alarm point are displayed in turn. If key 18 is not depressed, the interrupt operation is terminated without performing the mode advancing operation.
  • a flag A (indicating the status of numeral updating unit 17) is checked in step 44 to determine whether or not it is set. If flag A is not set, numeral updating keys 17a and 17b are checked in step 45 to determine whether or not they are depressed. If one of keys 17a and 17b is found to be depressed, flag A is set in step 46. Then, in step 47, a value stored in the input buffer is updated according to the status of keys 17a and 17b. In other words, the value is decremented if key 17a is depressed, and incremented if key 17b is depressed. The updated value is then displayed on display area 15a. At this point, the interrupt operation is terminated.
  • step 45 If in step 45 it is determined that neither of keys 17a and 17b is depressed, the operation returns to step 42 and continues as described above. If flag A is found to be set in step 44, keys 17a and 17b are checked in step 48 to determine whether or not they are depressed. If they are found to be depressed, the counter in RAM 14 is cleared in step 49. Steps 44 to 49 show the operation of a key pushing identification means 5 which determines at a predetermined time interval whether or not keys 17a and 17b are pushed.
  • step 50 to check whether or not mode changing key 18 is depressed. If mode changing key 18 is found to be pushed, numeral updating key 17a or 17b is used to update a value stored in the input buffer. Then, the updated value in the input buffer is stored as a value for a new mode in step 51. More particularly, if the current mode is the set point display mode, the value in the input buffer is stored in the set point area. And if the current mode is the alarm point display mode, the value in the input buffer is transferred to the alarm point area. Further, in step 51 flag A and the counter are cleared. Then, CPU 12 goes to step 52 to carry out the mode advancing operation (shown in FIG. 7 and discussed in detail below) followed by the termination of the interrupt operation.
  • steps 50 to 55 show the operation of a value changing means 6 which sets a set value when a predetermined time elapses after key 17a or 17b is depressed or when mode changing key 18 is pushed.
  • FIG. 7 is a flow chart showing the mode changing operation. According to FIG. 7, each push of mode changing key 18 sequentially changes the display mode, for example, from the process value display mode to the set point display mode, from the set point display mode to the alarm point display mode or from the alarm point display mode to the process value display mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Feedback Control In General (AREA)
  • Surgical Instruments (AREA)
  • Automatic Control Of Machine Tools (AREA)
  • Paper (AREA)
  • Numerical Control (AREA)
  • Control Of Temperature (AREA)
  • Testing And Monitoring For Control Systems (AREA)
US07/172,438 1987-03-31 1988-03-24 Physical quantity controller Expired - Lifetime US4893230A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62-80341 1987-03-31
JP62080341A JPH0685121B2 (ja) 1987-03-31 1987-03-31 制御装置

Publications (1)

Publication Number Publication Date
US4893230A true US4893230A (en) 1990-01-09

Family

ID=13715557

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/172,438 Expired - Lifetime US4893230A (en) 1987-03-31 1988-03-24 Physical quantity controller

Country Status (7)

Country Link
US (1) US4893230A (es)
EP (1) EP0285119B1 (es)
JP (1) JPH0685121B2 (es)
KR (1) KR880011632A (es)
AT (1) ATE76986T1 (es)
DE (1) DE3871588T2 (es)
ES (1) ES2033971T3 (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657418A1 (fr) * 1990-01-25 1991-07-26 Vaillant Sarl Systeme regulateur pour une installation de chauffage d'eau marchant de preference au gaz.
US5218579A (en) * 1988-10-28 1993-06-08 Omron Tateisi Electronics Co. Numerical value setting device
US5648751A (en) * 1994-11-07 1997-07-15 Kabushiki Kaisha Yuyama Seisakusho Drug preparation tray
GB2525439A (en) * 2014-04-25 2015-10-28 Tom Chandley Ltd Monitor
US20220350320A1 (en) * 2019-08-01 2022-11-03 Mitsubishi Power, Ltd. Plant monitoring device, plant monitoring method, and program

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05244526A (ja) * 1992-02-26 1993-09-21 Mitsubishi Electric Corp 入力装置
JP4291169B2 (ja) * 2004-01-27 2009-07-08 株式会社山武 Ｐｉｄパラメータ前回値復帰方法およびｐｉｄパラメータ設定操作装置
JP4714797B2 (ja) * 2005-09-28 2011-06-29 株式会社メイクソフトウェア 写真シール作成装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4636963A (en) * 1982-09-29 1987-01-13 Fuji Electric Co., Ltd. Control system for an automatic vending machine
US4685064A (en) * 1982-10-25 1987-08-04 Fanuc Ltd Electric discharge machining condition setting system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122037A1 (de) * 1981-05-29 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Elektronisches regelgeraet
DE3335219A1 (de) * 1983-09-29 1985-04-11 Gossen Gmbh, 8520 Erlangen Digitaler mehrfach-regler
JPS6165506U (es) * 1984-09-28 1986-05-06

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4636963A (en) * 1982-09-29 1987-01-13 Fuji Electric Co., Ltd. Control system for an automatic vending machine
US4685064A (en) * 1982-10-25 1987-08-04 Fanuc Ltd Electric discharge machining condition setting system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Zenith System 3 Color TV operating guide, pp. 8 13. *
Zenith System 3 Color TV operating guide, pp. 8-13.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5218579A (en) * 1988-10-28 1993-06-08 Omron Tateisi Electronics Co. Numerical value setting device
FR2657418A1 (fr) * 1990-01-25 1991-07-26 Vaillant Sarl Systeme regulateur pour une installation de chauffage d'eau marchant de preference au gaz.
US5648751A (en) * 1994-11-07 1997-07-15 Kabushiki Kaisha Yuyama Seisakusho Drug preparation tray
GB2525439A (en) * 2014-04-25 2015-10-28 Tom Chandley Ltd Monitor
US20220350320A1 (en) * 2019-08-01 2022-11-03 Mitsubishi Power, Ltd. Plant monitoring device, plant monitoring method, and program

Also Published As

Publication number Publication date
ES2033971T3 (es) 1993-04-01
JPH0685121B2 (ja) 1994-10-26
JPS63245701A (ja) 1988-10-12
KR880011632A (ko) 1988-10-29
ATE76986T1 (de) 1992-06-15
DE3871588T2 (de) 1993-02-04
EP0285119A1 (en) 1988-10-05
EP0285119B1 (en) 1992-06-03
DE3871588D1 (de) 1992-07-09

Similar Documents

Publication Publication Date Title
US4399352A (en) Heating device with separate display means for the types of data entered
US4276541A (en) Display control of hand-written, memorized pattern at a preselected time
US4387420A (en) Programmable clock
US4893230A (en) Physical quantity controller
US4420816A (en) Electronic word retrieval device for searching and displaying one of different forms of a word entered
US4318181A (en) Timer display apparatus
JPS5846028B2 (ja) 表示方式
US4126949A (en) Educational calculator
KR100360444B1 (ko) 냉장고의 보관 리스트 작성 시스템 및 그 제어방법
JP2984770B2 (ja) 電子時計
US4025774A (en) Timing apparatus including electronic calculator circuits
US4651294A (en) Electronic function calculator with improved functional command entry
JP3375648B2 (ja) シーケンス制御装置
JPH0615318Y2 (ja) 電子スケジュ−ラ
JPS6236560B2 (es)
JPS6217841Y2 (es)
JPS56168220A (en) Process step-forward type sequence controller
EP0418012A2 (en) World timepiece
JPS63189767A (ja) 冷蔵庫管理装置
JPS55115106A (en) Display method for process status
JPS62117011A (ja) 入出力ユニツトのチヤネル表示装置
JPS57141770A (en) Electronic cash register
JPH0311755Y2 (es)
JPS56135236A (en) Numeric data displaying system
JPS5679329A (en) Electronic appratus

Legal Events

Date Code Title Description
AS Assignment

Owner name: OMRON TATEISI ELECTRONICS CO., 10, TSUCHIDO-CHO, H

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:SHIMOMURA, TOORU;NAGANAWA, KAZUTOMO;TANAMURA, TOSHIYA;AND OTHERS;REEL/FRAME:004900/0945

Effective date: 19880525

Owner name: OMRON TATEISI ELECTRONICS CO.,JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIMOMURA, TOORU;NAGANAWA, KAZUTOMO;TANAMURA, TOSHIYA;AND OTHERS;REEL/FRAME:004900/0945

Effective date: 19880525

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12